Block Spam No Domain

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How can I block spam messages with a From: address that contains no domain, for example, yetdhfoep@?

  1. Configure Messaging Server to reject email with an invalid domain in the From: field. See Prevent Mail Relay in the Sun Java System Messaging Server 6 2005Q4 Administration Guide for more information.
  2. Upgrade to the newest release of Messaging Server, to take advantage of the latest blocking capabilities.
  3. If the server is not a large one, and can handle some DNS performance hit, try the mailfromdnsverify keyword. That checks that the From: field is a valid domain before accepting a message.

See this forum thread for more information: http://forum.java.sun.com/thread.jspa?threadID=5114746&tstart=0

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